Controlling apparatus for hoisting-engines.



G. R. WELCH. coNTRoLLING APPARATUS Pon HoIsTING ENGINES.

APPLICATION FILED 00T. 13, 1909.

Patented July 26, 1910.

CLARENCE n. WELCH,` `or nntr'rn,` MONTANA.

CONTROLLING- APPARATUS FORMHOISTING-ENGINES.

Specification of Letters Patent.

Patented July 2c, 1910.

Application led October 13 Serial No. 522,447.

" To all whom it may concern:

Bc it known that I, CLARENCE a citizen of the United States, residing at Butte, in the county of Silverbow and' State of Montana, have invented new and useful Improvements in Controlling Apparatus for Hoisting-Engines, is a specification. j j

The present invention relates to controlling apparatus for has for its principal object the improvement of the constructions shown and described in my prior patents numbered 862687 and 888946, granted, respectively, August 6,1907, and Mayf25, 1908, such improvements residing primarily in the production of an extremely simple and eective trip adapted upon actuation to release the valve of a throttle located in the pipe line leading to the controller, for admittingthe passage of a motive iiuid thereto.

A practical embodiment of the invention is illustrated in the accompanying drawing, wherein Figure 1 is a side elevation, partly in section, of said invention complete. Fig. 2 is a plan view of the trip mechanism. Fig. 3 is a perspective view of the trip proper.

Reference being had to said drawings, and to the characters marked thereon, A designates in a general manner the engine controller, B the governor, and C and D the primary and secondary trip-operating mechanisms.

The controller Ai consists in the present instance of a cylinder 1` in which is movable a piston 2 whose stein is connected to the brake-operating lever 3, the movement of the piston requisite to set thebrakes being effected by the entrance of a motive fluid through the pipe line 4 into cylinder 1. The passage of the Huid through the pipe line is regulated by means of a throttle valve 5 located in that section of said line which is directly adjacent the two trip mechanisms. Upon this section there is mounted an upstanding arm 6 having a threaded terminal which carries an adjusting nut 7 adapted to be tightened against the adjacent end of a bar S connected to the stem of the throttle. The other end of bar 8 isadapted to be engaged by the bent upper terminal 9 of the trip 10 which is` pivotally connected to a collar 1l fitted upon the above-mentioned section of the pipe line, the arrangement being such that when the nut is screwed R. WELCH,

. also engaged therewith, .held in closed position, H the passage ofthe motive fluid to the brake cylinder and the `the brakes.

of which the following hoisting engines, and it j j lupright shaft manner with the engine.

. be apparent.

down against said bar and the trip end 9 the throttle will be thereby preventing consequent application of j The primary mechanism C for actuating the trip isoperatively connected with the governor B, which latter isin the main of conventional type and .is mounted upon an 12 connected in any suitable The governor includes a sleeve 13 providedwith a cross-pin 14 which is loosely engaged by a yoke 15 secured laterally to a horizontal rock shaft 16. The ends of this shaft have secured thereto a pair of arms 17 arranged at right angles to the above mentioned yoke and pivoted at their terminals to the rear section 1S of a slide movable forward and backward wit-hin a recess 19 formed in the enlarged head 20 of an upright 21 located directly beneath the trip 10. The front section 22 of the slideis hinged to the rear section and is adapted, when moved forwardly, to be raised into position to engage and thereby actuate said trip, the movement ofthe slide being automatic by reason of the connection of its rear section with the governor through the medium of the rock shaft and its arms and yoke. The upward movement of the front section of said slideis eHected by means of `a tooth 23 formed upon a rotating collar 24 keyed to a shaft 25. This shaft is provided at one end with a gear 26 which meshes with asimilar gear 27 secured to the adjacent end of a second shaft 28. These shafts are sup- `ported in any preferred manner, and the second shaft, which is threaded, is driven from the engine, with which it is suitably connected, as, for instance, by a chain and sprocket mechanism 29. The last mentioned shaft carries a traveling nut 30 which pro jects rearwardly toward shaft 25, and is bifurcated, as indicated by the numeral 31, the legs thus formed being provided with alining openings through which said shaft 25 extends. The collar 24C is located between these legs, and for this reason is caused to move along shaft 25 with said nut, as will Trip 10, as shown in Fig. 3, has a yokelike lower portion whichstraddles collar 1l. The legs of this portion are substantially L-shaped, and the free or horizontal arms '3A thereof project directly above the front section of the slide and toward the shaft 25 upon which collar 24 moves. f

The driving connections' between the engine and the threaded shaft 28 are such that the nut 80 travels along the latter at a speed directly proportional to that of the cage 45 in the elevator shaft 35, which cage is' likewise driven from the engine, asv will be understood. Furthermore, the lengths of the shafts 25 and 28 are so proportioned that when the cage reaches a predetermined point in its travel, (for instance, the top floor of the building wherein it is installed), said nut will occupy a position directly beneath the front section of the slide, which section has previously been shifted into its forward or operative position by the outward movement of the governor arms, it being apparent that when the engine is running, said arms will move in the direction specified, thereby raising sleeve 13 and rocking shaft 16 toward the right, with a resultant advance of the slide. Consequently, when the relative positions of the slide and nut are as above stated, the front section of said slide will be engaged and lifted by tooth 23 on collar 24, so as to engage in turn the bent arms 34 of trip 10 and to rock the latter into the position shown in dotted lines in Fig. l. Such movement will cause the bent end 9 of the trip to disengage bar 8, whereupon the released end of the latter will swing upwardly under the tension of nut 7 upon its other end, thus opening the throttle and admitting steam or other motive iuid through the pipe line 4 into the brake cylinder' 1 for the purpose of shifting lever 3V and applying the brakes.

The secondary trip-actuating mechanism D may also be made use of either in addition to or independently of the mechanism C already described. In such case there is arranged within and at the top of the elevator shaft, 35, a weight 36 connected by a cable 37 with the horizontal arm 38 of a bell-crank lever 39. The shorter or vertical arm 40 of this element is pivoted at its free end at 4l to a bracket 42 mounted upon the upright head 20. Arm 38 carries a weight 48 and is also provided with a pin 44 which contacts with trip 10 when the latter is in its normal or operative position. Hence, when the cage 45 is raised sufficiently high to strike against Weight 36, said weight will be raised in turn, thereby permitting a downward swinging movement of weight 43 and consequently of lever 39, owing to the ,manner 1n which the latter is mounted.

Vhen this movement of the lever takes place, its pin 44 will shift the upper portion of the trip toward the left, whereupon the throttle will be opened by the upward movement of bar 8, as in the construction first described. In this connection it maybe stated that the above described arrangement of the primary and secondary trip-actuating mechanisms is somewhat arbitrary, since the component parts of the first-named mechanism may be so disposed as to insure the actuation of the trip when the cage reaches the bottom Hoor, rather than the top floor of the building, by merely shifting the upright 21 to a Dosition adjacent the opposite ends of the shafts 25 and 28. The first arrangement, however, is considered preferable. It may also be stated that in the construction illustrated, the secondary trip-actuating mechanism is supplemental to the primary mechanism, and is located at the top of the elevator shaft, so as to insure, in the event of injurv to said primary mechanism, the stoppage of the cage before striking against the roof of the building.

Further description of the invention is considered unnecessary in view of the foregoing.

What is claimed is:

1. The combination, with an engine controlling mechanism, including a piston and a cylinder, and a pipe line leading to lhe latter; of means for controlling the passage of motive fluid through said line to the cylinder; a rocking trip normally engaged with said controlling means to hold the same in closed position; and trip-actuating mechanism haring one element thereof arranged for movement into position to engage and roer said trip, to disengage the same from said means.

2. The combination, with an engine controlling mechanism, and {luid-operated means for actuating the same; of means comprising a throttle and a bar connected thereto for controlling the operation of said actuating means; a rocking trip having a portion thereof normally engaged with said bar, to hold the throttle closed; and primary and secondary trip-actuating mechanisms each having one element thereof movable under predetermined conditions into position to engage and rock said trip, to release the same from engagement with said bar.

8. The combination, with an engine controlling mechanism including a piston and a cylinder, and a pipeline leading to the latter; of a throttle located in said linefor controlling the passage of motive fluid therethrough to said cylinder; a bar connected to the throttle; a rocking trip pivotally mounted upon the pipe line and normally engaged at one end with said bar, to hold the throttle closed; and trip-actuating mechanism having one element thereof arranged for movement into position to engage and rock said trip, to release the same from engagement with said bar.

4. The combination, with an engine controlling mechanism, and power-operated means for actuating the same; of means for trolling mechanism,

controlling` the operation of said actuating means; a trip associated with said controlling means; a governor-controlled slide movable into position to actuate the trip; and means for causing said slide to actuate said trip on reaching such position.

5. The combination, with an engine controlling mechanism, means for actuating the same; of means for controlling the operation of said actuating means; a trip associated with said controlling means; a governor-controlled slide movable adjacent the trip and including a hinged section; and means for shifting said section into position to actuate said trip.

6. The combination, With an engine controlling mechanism, and power-operated means for actuating the same; of means for controlling the operation of said actuating means; a trip associated With said controlling means; a governor-controlled slide movable into position to actuate the trip; a traveling member located adjacent said slide; and means carried by said member for causing said slide to actuate said trip on reaching such position.

7. The combination, with an engine controlling mechanism, and power-operated means for actuating the same; of means for controlling' the operation of said actuating means; a trip associated Withisaid controlling means; a governor-controlled slide movable adjacent the trip and having a hinged front section; and means for raising said section into position to actuate said trip.

S. rlhe combination, with an engine conand means for actuating the same; of means for controlling the operation of said actuating means; a trip associated With said controlling means; a slide movable adjacent the trip, and including a movable section; a member arranged to travel adjacent said slide; and means carried by said member for shifting said movable and power-operated section into position to engage and actuate said trip.

9. In an engine controlling apparatus, the combination of a trip; a member arranged for movement into position to actuate the same; a' traveling member located adjacent the first-mentioned member; and a rotatable member carried by the traveling member and arranged during its rotation to engage said inst-mentioned member when the latter has reached such position, to cause said member to actuate said trip.

l0. In an engine controlling' apparatus,

.the combination of a trip; a member movable into position to actuate the same, and including a hinged section; and a rotatable member located adjacent the first-mentioned member and provided With means adapted to engage the hinged section thereof, on reaching such position, for causing said section to actuate said trip.

11. In an engine controlling apparatus, the combination of a trip; a member movable beneath the same, and having an independently movable section; and means for causing said section to actuate said trip when said member occupies a predetermined position.

12. In an engine controlling apparatus, the combination of a trip; a member movable beneath the same, and having an independently movable section; and a rotatable member provided with means for shifting said section into position to actuate said trip when the first-mentioned member occupies a predetermined position.

, In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

Witnesses FRANK WEST,

J r., J. F. TAYLOR. 

